PTGDS and neoplasm: These genes are involved in the regulation of immune/inflammatory response (Lgals1, Ptgds, Tff2, Ubd), tumor angiogenesis (Lgals1, Esm1, Ndrg1), epidermal growth factor signaling (Erbb4, Nrg1), response to tissue injury (Tff2, Vnn1), and gene transcription (Id3, Ifrd1).